Hacking A USB Rechargeable Lighter

I found this USB rechargeable lighter in Walmart and immediately thought about using it as a rechargeable battery for small electronic projects! It’s pretty easy to take apart and remove the heating element, install a switch and you have a neat little 3.7 volt LiPo battery pack for about $6.00!

Keep on hackin…

73 Honda CB750 Custom Build Part 20 – Starter & Alternator

The starter on an engine is a DC motor that rotates the crankshaft of the engine to get it started. Once the engine is started, the starter must have some sort of mechanism that uncouples it from the engine or else it would spin too fast and be destroyed. Automotive starters have a built in mechanism called a bendix drive that engages and disengages the drive gear with the engine’s flywheel. Starters on motorcycles utilize a one way clutch known as a Sprag Clutch. It will allow torque in one direction only and slip in the other direction.

The alternator is a device that produces an AC electrical current when rotated. The center portion known as the rotor is an electromagnet. It rotates within an outer winding of metal and wire called a stator. Each component functions as an electromagnet with multiple north and south poles. When in rotation, these opposite poles pass by each other and produce and electrical current in their windings via magnetic induction. The AC current output then passes through a bridge rectifier which converts it into a DC current that can charge a battery.

In this week’s video I’ll take a look inside both of these components, test them, and then install them in the engine.

Keep on hackin…

How To Build A Horizontal Sundial

I’ve always wanted to build a sundial and so I finally did! I figured it would be the perfect project for HAW and a great educational tool. I started with a few Google searches and before I knew it I was over my head in info on sundials! There are several varieties from very simple to very complex but I chose the horizontal model. I found a few links that were quite a help.

You’ll need to reference these links to help with laying out the dial and the “gnomen” of your sundial.

History Of Sundials
Find your latitude and longitude by location
Horizontal Sundial Calculator
Find your magnetic declination by location

All you really need to build a sundial is some paper, a pencil, ruler, protractor and some glue or a hot glue gun. I mounted my paper printouts on some foam board with spray adhesive, then used hot glue to attach the gnomen.

Follow along on with the video and you’ll see how easy it is to make your very own sundial!

Keep on hackin!